Installed a Walbro lift pump

[nickleinonen]

I don't believe they make such an animal. The boost referenced bypass regulators are used, mostly, in carburated applications as we all know... They wouldn't work at anything less than 1 to 1 pressure ratios. Gonna have to be a custom regulator. I don't want to even think what that'd cost :--)

i think something like this could be made to work. . it would just need a bleed hole in the boost line [like a boost elbow] to make it loose some pressure to the diaphragm [efi application, hopefully the diaphragm would hold up to diesel - and it looks pretty]



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[Matt S]

It is because the maker of the modded CP3's are saying you need 40psi at the inlet to make the modded CP3 work as designed.

Is this because of the FASS system or 40 psi period with any pump? I would think it would be different with say the Walbro or other pump.

 

[Tomeygun]

Is this because of the FASS system or 40 psi period with any pump? I would think it would be different with say the Walbro or other pump.

I honestly dont know.



I think the CP3 does not care as long as you can maintain that PSI...

 

[Matt S]

I honestly dont know.



I think the CP3 does not care as long as you can maintain that PSI...

There's a better discussion on this in your other thread that I read after making the post.

 

[MPletchetero]

[QUOTE



As a result, the sequence of fuel flow is…. . tank, Fram inline filter, Walbro pump, Permacool spin-on filter/separator, OEM filter canister, injection pump, 1/4" bypass hose, and then either the OEM return line or the secondary 3/16" return line.





very nice set up. I see that you installed a Permacool filter/separator before the OEM filter canister without any fuel heater. I'm thinking about installing the same set up but I was concerned about the water freezing and plugging that filter in the winter. I see that you're from Wisconsin too. How long have you had this set up?Have you run this set up in the winter without any problem?

 

[MFalkinham]

[QUOTE

very nice set up. I see that you installed a Permacool filter/separator before the OEM filter canister without any fuel heater. I'm thinking about installing the same set up but I was concerned about the water freezing and plugging that filter in the winter. I see that you're from Wisconsin too. How long have you had this set up?Have you run this set up in the winter without any problem?

Thanks! I've only been running this setup for a week now and about 200 miles. So far this new system has exceeded my expectations. The Cummins is running smoother and stronger than ever, the Walbro pump is very quiet, and my fuel mileage is even up a bit.

I'm not sure how the Perma-cool separator will behave in colder temperatures. I bought it more for the filtering aspect than the separation. This summer I plan on cross-referencing the Perma-cool filter with another brand and get rid of the separation factor for the winter. I'm also hoping that since the FASS system doesn't have major problems in cold weather, then this system won't either.

I work up in the Germantown area should you want a first-hand look at what I did.

 

[MPletchetero]

Cat 2 micron fuel filter P/N 1R-0750 will fit perfectly to a Permacool filter head. You can get one from local Cat distributor for around $12. 00. I have mine installed between the OEM filter canister and CP3.

 

[jcroman]

Cat 2 micron fuel filter P/N 1R-0750 will fit perfectly to a Permacool filter head. You can get one from local Cat distributor for around $12. 00. I have mine installed between the OEM filter canister and CP3.

thats a more effecient place to put it, since the stock filter is 10 microns. if you put it before the stock filter the stock filter is esentially jut adding restriction and not really filtering anything. i am gonna put a perma cool in before my walboro and use a cat 1R-0712 15 micron filter so my walboro doesnt have to eat all the garbage in the tank ist.

 

[JohnnyH]

Can I add one of these 2 micron filters without doing anything to the stock lift pump, or am I asking too much from it. I would like to do a new pump and filter in the future, just waiting to get a parts list together.



John

 

[Diesel Power]

I honestly dont know.



I think the CP3 does not care as long as you can maintain that PSI...

the psi is not as important as volume, the guys who are worried about 40psi at idle should not. there is a return line on the cp3---so what the cp3 does not use will go back into the tank--no problem, reguardless of psi. thanks Oo.

 

[lmills]

Well, I finally got around to installing the fuel pressure regulator and eliminating the open return this weekend. With the bullydog crazy larry tune, TST on 3-3 and the new injectors, I can bleed the rail down till it misses. So, I rolled into the throttle rather than smashing it. On the same level that bled the rail, I was able to maintain 22 psi of fuel pressure. This was with the pressure set at 27 psi at idle. The walbro looks to be very promising for the budget minded.

 

[Tomeygun]

Well, I finally got around to installing the fuel pressure regulator and eliminating the open return this weekend. With the bullydog crazy larry tune, TST on 3-3 and the new injectors, I can bleed the rail down till it misses. So, I rolled into the throttle rather than smashing it. On the same level that bled the rail, I was able to maintain 22 psi of fuel pressure. This was with the pressure set at 27 psi at idle. The walbro looks to be very promising for the budget minded.

LUCKY!!



I just ordered my Aeromotive P#13301 bypass regulator today - $111



I am not sure of that was the best deal. But I like the flexiblity of the PSI range. Then ordered all the fittings I needed for like $10 from http://www.fittingsandadapters.com - they were WAY cheaper than anyone I found.



I was thinking of doing 1/2 inch line, But that seems overkill and I was not wanting to spend alot for this experiment - as it sits now, I can simply splice this in, and use the FASS fuel-return I bought from them (returns fuel to the filler tube)



I'm all about the easy installs :-laf



Ohh yeah, ordered a 1/2 suction tube as well, Thought I dont want to really install it, yuck!

 

[lmills]

Tomey, I am actually in the process of send the vids of your truck on the dyno over to a buddy. He has a 3rd gen with a set of twins that we built using the HT Turbo HTB2 62. He is also going to be on the list shortly for a modded CP3.



Right now, he wants to see the vids of your truck rolling coal.

 

[Jeff_K]

Well, I finally got around to installing the fuel pressure regulator and eliminating the open return this weekend. With the bullydog crazy larry tune, TST on 3-3 and the new injectors, I can bleed the rail down till it misses. So, I rolled into the throttle rather than smashing it. On the same level that bled the rail, I was able to maintain 22 psi of fuel pressure. This was with the pressure set at 27 psi at idle. The walbro looks to be very promising for the budget minded.

Awesome news! Can't wait to get mine installed

 

[Tomeygun]

Well, I finally got around to installing the fuel pressure regulator and eliminating the open return this weekend. With the bullydog crazy larry tune, TST on 3-3 and the new injectors, I can bleed the rail down till it misses. So, I rolled into the throttle rather than smashing it. On the same level that bled the rail, I was able to maintain 22 psi of fuel pressure. This was with the pressure set at 27 psi at idle. The walbro looks to be very promising for the budget minded.

BTW - which regulator did you end up going with?

 

[lmills]

I've got the mallory EFI 30-100 psi regulator. The Mallory was the easiest to get at the local gearhead shop on short notice.



It was either going to be a mallory or the aeromotive you got.

 

[AEzzo]

Well, I finally got around to installing the fuel pressure regulator and eliminating the open return this weekend. With the bullydog crazy larry tune, TST on 3-3 and the new injectors, I can bleed the rail down till it misses. So, I rolled into the throttle rather than smashing it. On the same level that bled the rail, I was able to maintain 22 psi of fuel pressure. This was with the pressure set at 27 psi at idle. The walbro looks to be very promising for the budget minded.

What happens to pressure if you "smash" the throttle? Does it drop about the same? 5 PSI drop is not to bad. You should be flowing about 75-76 GPH @ 22 PSI

 

[lmills]

The only thing that happens is the rail runs dry. The pump never has an issue with keeping up, its the cp3 losing volume. If I take it down a notch to where the CP3 can keep up the engine does not miss, then smash the throttle to the floor, the walbro still maintains steady pressure around 22-23 psi.

 

[lmills]

Stage 2 CP3 is on and the Walbro is keeping up nicely. I have the pressure set at 30 psi (since my gauge only goes to 30) and the pressure draws down to 24 at WOT. After I upgrade to a larger gauge, I am going to adjust the pressure up to 40 and see how it does.

 

[CraigJones]

Is it possible to relocate the stock filter closer(maybe before the walbro pump) to the tank and try to fit the cat 2 filter in its place and still keep the capability of using the fuel heater in the canister ?